that's driven by users, not them. if the only way i could use bitpay was to do it through ethereum then my business with them is over for good.
most merchants wouldnt notice the difference as most merchants offering crypto through coinbase/bitpay are ones that simply want fiat at the end so what the merchant accepts from customers is never really bitcoin or other crypto in the first place as its 'managed' by 3rd party
those that want crpyto even if it changed to lets say litecoin. would just do a profile settings to convert LTC to 95% fiat 5% btc so that the merchant still gets the small percentage the average merchant decides to keep as btc.. even if the merchant is physically offering LTC due to a polict change of the merchant tools that could happen
It's not so simple... Bitcoin is what it's today because it have built a reputation along the years,
the franch franc had centuries of 'reputation'.... but then
boom
the euro
the spanish peseta had centuries of 'reputation'.... but then
boom
the euro
the UK one pound coin was round and had a reputation for being round...... but then
boom
12 sided edges
Global, decentralized, online currencies, not official country's currencies, centralized ones.
People will use Crypto-Currency while they believe it, trust it. If the system keeps changing from one to another main Crypto-Currency, the trust will become weaker and weaker even more. Stability is the key, buyer and, investors are aware of it. Buyers happy, sellers with full pockets.